CVE-2018-20663 in Reporting Addon
Summary
by MITRE
The Reporting Addon (aka Reports Addon) through 2019-01-02 for CUBA Platform through 6.10.x has Persistent XSS via the "Reports > Reports" name field.
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Analysis
by VulDB Data Team • 06/23/2023
The vulnerability identified as CVE-2018-20663 represents a critical persistent cross-site scripting flaw within the Reporting Addon component of the CUBA Platform ecosystem. This security weakness affects versions of the platform up through 6.10.x and specifically targets the Reports module where users can create and manage report definitions. The vulnerability manifests when attackers exploit the name field within the "Reports > Reports" section of the application interface, allowing them to inject malicious script code that persists in the system and executes whenever the affected report is viewed or processed. The CUBA Platform is a comprehensive enterprise application development framework that enables organizations to build business applications with robust reporting capabilities, making this vulnerability particularly concerning for enterprises relying on its reporting features.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding within the Reporting Addon's user interface components. When users enter data into the report name field, the application fails to properly sanitize or escape special characters that could be interpreted as executable script code by web browsers. This weakness aligns with CWE-79 which defines Cross-Site Scripting as a common web application vulnerability where untrusted data is directly included in web pages without proper validation or encoding. The persistent nature of this flaw means that malicious scripts stored in the database remain active until explicitly removed, making it particularly dangerous as it can affect multiple users over extended periods. The vulnerability operates at the application layer where user input is processed and rendered back to users, creating an attack surface that can be exploited through various attack vectors including social engineering or direct exploitation by authenticated users.
The operational impact of CVE-2018-20663 extends beyond simple script execution and can enable attackers to perform a wide range of malicious activities including session hijacking, data exfiltration, and privilege escalation within the application environment. An attacker who successfully exploits this vulnerability could potentially steal user credentials, manipulate report data, or gain unauthorized access to sensitive business information processed through the CUBA Platform. The attack surface is particularly broad as this vulnerability affects the core reporting functionality that many enterprises depend upon for business intelligence, compliance reporting, and operational dashboards. Organizations using CUBA Platform versions up to 6.10.x with the Reporting Addon installed face significant risk of unauthorized access and data compromise, especially in environments where the platform handles sensitive corporate or customer information. This vulnerability also aligns with ATT&CK technique T1059.007 which covers script execution through web shells and persistent XSS attacks that can be leveraged for broader system compromise.
Organizations affected by this vulnerability should implement immediate mitigation strategies including applying the vendor-provided patches or updates that address the input validation and output encoding issues within the Reporting Addon. System administrators should also consider implementing additional security controls such as web application firewalls that can detect and block suspicious script patterns in user input fields. The remediation process should include thorough input validation of all user-entered data within the reporting module, combined with proper output encoding to prevent script execution in web contexts. Organizations should also conduct comprehensive security assessments of their CUBA Platform installations to identify any other potential persistent XSS vulnerabilities within the application ecosystem. Regular security monitoring and user access controls should be enhanced to limit the potential impact of any successful exploitation attempts. The vulnerability serves as a reminder of the critical importance of input validation and output encoding in web application security, particularly in enterprise platforms where reporting capabilities are integral to business operations and data processing workflows.